From nobody Sat Nov 23 12:24:43 2024 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 60D221714A8; Wed, 13 Nov 2024 04:39:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731472767; cv=none; b=bLo2fh5GcFvQaTYkkrJZFZCtlQ0z+MHk2H/fjp5ewiK4Kd5QecB++8NSp7d+sVtBTjL7u5SCzZnjRqfjmCriUk6qvJNUCKG1bNrUJwv4PnQlZdMEYsWbySmhtGjRpIufilARFRtt5oAdhnvvHsZDzyrX1OUeuv9Aj4bORxcUaag= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731472767; c=relaxed/simple; bh=VXlyg1iYL20U+q7NRI+j44FKT/JI+59MkXqT/xSpk+k=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=Qy7/0RcYsbIcu90Ee3j9Bjfp37z8AkF2V1Cy9QfU4jVnFc8eay0TET3QLLMtoEGlF27u04KYwu9NYZ/dJl6gmwbXDPNkfU/ywUGPJJMbgxOLp2bYovb1DSF/7ufmuHq1x7GaXY7N8NcCm41b4IhByyB+YL17j8dHzepSUfdm5Sw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=kflLzSQG; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="kflLzSQG" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1731472757; bh=VXlyg1iYL20U+q7NRI+j44FKT/JI+59MkXqT/xSpk+k=; h=From:Date:Subject:To:Cc:From; b=kflLzSQGNyMec9neRrM4yOqM01ruKG8ueDxr4hLywPKDkp0yS3GUOA/B+EsMbqGZb a6xucRiwOa8n/Omvl4rfd+eoHOWVD7tVbQtDWoRdDsqgu4YSRHF9OgZ/iZYn4IO7fS ZbPTGkUiZTFktSRkYK+oL6AbfblO06d3ScCQL698= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Wed, 13 Nov 2024 05:39:16 +0100 Subject: [PATCH] hwmon: (core) Avoid ifdef in C source file Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241113-hwmon-thermal-v1-1-71270be7f7a2@weissschuh.net> X-B4-Tracking: v=1; b=H4sIAHMtNGcC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIxNDQ0Nj3Yzy3Pw83ZKM1KLcxBxdoxSjlERTC8NkI3MzJaCegqLUtMwKsHn RsbW1APYe+WJfAAAA X-Change-ID: 20241113-hwmon-thermal-2d2da581c276 To: Jean Delvare , Guenter Roeck Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731472756; l=2493; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=VXlyg1iYL20U+q7NRI+j44FKT/JI+59MkXqT/xSpk+k=; b=iHIF9EfKy8TcHgkHF6w9lPq+xRCi44NVauAzryZceoGYgMCQLEllQQ6ufZsHrQGLbpTnHK1us 4xCSr25Mf1cDyZO+2mSQStx9YscSvt5uRaop7Tl7vCfyzlARWtpCVly X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Using an #ifdef in a C source files to have different definitions of the same symbol makes the code harder to read and understand. Furthermore it makes it harder to test compilation of the different branches. Replace the ifdeffery with IS_ENABLED() which is just a normal conditional. The resulting binary is still the same as before as the compiler optimizes away all the unused code and definitions. Signed-off-by: Thomas Wei=C3=9Fschuh --- This confused me a bit while looking at the implementation of HWMON_C_REGISTER_TZ. --- drivers/hwmon/hwmon.c | 21 ++++++--------------- 1 file changed, 6 insertions(+), 15 deletions(-) diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index 9c35c4d0369d7aad7ea61ccd25f4f63fc98b9e02..86fb674c85d3f54d475be014c3f= d3dd74c815c57 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -147,11 +147,6 @@ static DEFINE_IDA(hwmon_ida); =20 /* Thermal zone handling */ =20 -/* - * The complex conditional is necessary to avoid a cyclic dependency - * between hwmon and thermal_sys modules. - */ -#ifdef CONFIG_THERMAL_OF static int hwmon_thermal_get_temp(struct thermal_zone_device *tz, int *tem= p) { struct hwmon_thermal_data *tdata =3D thermal_zone_device_priv(tz); @@ -257,6 +252,9 @@ static int hwmon_thermal_register_sensors(struct device= *dev) void *drvdata =3D dev_get_drvdata(dev); int i; =20 + if (!IS_ENABLED(CONFIG_THERMAL_OF)) + return 0; + for (i =3D 1; info[i]; i++) { int j; =20 @@ -285,6 +283,9 @@ static void hwmon_thermal_notify(struct device *dev, in= t index) struct hwmon_device *hwdev =3D to_hwmon_device(dev); struct hwmon_thermal_data *tzdata; =20 + if (!IS_ENABLED(CONFIG_THERMAL_OF)) + return; + list_for_each_entry(tzdata, &hwdev->tzdata, node) { if (tzdata->index =3D=3D index) { thermal_zone_device_update(tzdata->tzd, @@ -293,16 +294,6 @@ static void hwmon_thermal_notify(struct device *dev, i= nt index) } } =20 -#else -static int hwmon_thermal_register_sensors(struct device *dev) -{ - return 0; -} - -static void hwmon_thermal_notify(struct device *dev, int index) { } - -#endif /* IS_REACHABLE(CONFIG_THERMAL) && ... */ - static int hwmon_attr_base(enum hwmon_sensor_types type) { if (type =3D=3D hwmon_in || type =3D=3D hwmon_intrusion) --- base-commit: 3022e9d00ebec31ed435ae0844e3f235dba998a9 change-id: 20241113-hwmon-thermal-2d2da581c276 Best regards, --=20 Thomas Wei=C3=9Fschuh